Pump



PUMP

Original Filed Oct. 20. 1930 fio Patented July 3, 1934 UNITED STATES PATENT; OFFICE Y PUMP Application October 20, 1930, Serial No. 489,750

Renewed November 22, 1933 19 Claims.

This invention relates to a pump and particulai-1y to a laminated pump.

it has for one object to provide a pump in which the pumping chamber is formed of laminations and in which the walls of the chamber are deformed to alter the volume of the chamber itself.

Another object is to provide a pump of this general type in which small quantities of liquid are delivered at high pressures and with great speed.

.mother object is to provide a pump actuating means.

Other objects will appear from tnne to time in the specincation and claims.

My invention is illustrated more or less diagrammatically in the aeoompanying drawing, wherein- Figure i is'an axial cross section through a Dump;

Figure 2 is a transverse cross section taken a line 2--2 oi Figure l;

Figure 3 is a transverse detailed cross section taken at line 3-3 oi Figure l;

Figure i is a view generally similar to Figure B, showing a modied form of laminated tube.

ike parts are designated by like characters throughout the speciiication and drawing.

A indicates a base portion upon which the pump body may be mounted. ms may be or" any suitable form and in the form illustrated herewith the base is provided with a lateral extension or part A1 to which the pump is attached. The operating means for the pump includes a pair oi relatively movable members B, B1. The member B may be attached to the portion A1 of the base by screws B2. At one end the member E is provided with a threaded perforation B3. @Ehe member .TB at its opposite end is provided a pair oi upwardly extending perforated ears B4. The upper or inner surface of the memher is preferably provided with a depression B5 within which the pump tube is positioned. The member B1 is provided at one end with a threaded perforation BS. The threads B6 of the member '51 are reversed with respect to the threads B3 oi the member B. At its opposite end the member B1 is provided with a downwardly depending ear B7 which is perforated as at B8. The portion BY, when the parts are assembled, lies between the portions B4. B9 is a rocker pin extending through the periorations in the member B4 and through the perforation BB of the member '57. This pin may be rounded, as indicated in Figure 2, and preferably iits snugly the perforation but is of a shape diiierent from the perforation so that relative movement of the parts is possible. The inner or lower face of the member B1 is provided with a hollow portion B10 within which the pump tube is positioned.

In the operation of the device, the parts B, B1 are moved toward and from each other. This movement is accomplished by a shaft C. One end of the shaft C is provided with threads C1 which engage the threads B3 of the member B. @5 Another part of the shaft C is provided with threads C2 which engage the threads B6 oi the member B1 and are reverse with respect to the threads C1. At its upper end the shaft C has ixed to it a lever C3 which is formed at its outer 7@ or free end into two yoke portions C4, C4. Between them is movably positioned a connecting rod or link C5, a pin C holding it in position. Any suitable means for moving the member C5 backward and forward to rock the shaft C is pro- 75 vided. This rocking movement by means of the relatively reversed threads on the shaft causes the members B and B1 to be alternately moved toward and from each other. The inner faces of the members B, B1, that is the faces which con- 530 tact the pump tube, may be rounded at their outer edges, as shown in Figure 1.

D is a pump tube. It is preferably oval, as shown, and in one form of my invention it is made of a single sheet of material wrapped about itself. 85 At one end it is fastened to and supported .in a perforated connection member D1 which, for oonvenience, may be made circular and exteriorly threaded as at D2. At its opposite end it is attaohed to and supported in. a similar connecting 9@ member D3 which is threaded as at D4.

Positioned about the member D1 is an inlet valve housing E which has a cavity or bore E1 within it. E2 is an extension from the member E1, provided with'a reduced bore E3. E4 is a further re- 95 duced portion provided with a bore E5. The portion E4 may be exteriorly threaded. E6 is a iiuid conduit positioned on the member E4 and held thereon by a cap E7 which engages the threads on the member E4. E8 is an inlet valve positioned 100 within the bore E3, carrying an enlarged head portion E9, lying within the bore El. E10 is a. compression spring tending to normally hold the valve seated in the position indicated in Figure l. The member D3 has mounted upon it an outlet 105 valve housing F which is hollow and preferably interiorly threaded as at F1. Extending from the member F and preferably formed integrally with it is a reduced hollow portion F2 which may be interiorly threaded as at FB. A passage F4 leads from u.

the interior of the pump tube D to the hollow portion oi' the extension F. An outlet valve F6 is positioned within the extension F and may be seated as indicated in Figure 1. A hollow connecting member F6 is removably positioned in the threaded portion F and to it an outlet conduit or connection of any suitable sort may be fastened. A spring F" is positioned in the hollow portion of the extension ln and bears at one end upon the valve l"s and at its other end upon the connection F5. It tends normally to hold the valve seated.

In Figure 4 a modified form of the pump is shown. Instead of the tube D shown in the other figures, the laminated pumping tube is built up of a plurality of separate integral tubes G which are positioned one within the other. The mounting of this tube may be the same as the mounting of the form of tube shown in the other figures and the operating means and other part-S of the pump assembly may be the same.

It will be realized that whereas I have herewith shown and described a practical operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention and I wish, therefore, that my showing be taken in a sense as diagrammatic.

The use and operation of my invention are as follows:

With the parts in the position shown, it is assumed that the pump tube is filled with liquid. 'I'he driving mechanismis put in operation and any suitable power source may be used. The member C5 is moved in a direction to rotate the shaft C so that the portions B, B1 are drawn toward each other. Ordinarily the amount of movement is minute. As the parts B, B1 move with relation to each other, they tilt about the rocking pin B8 and as they are drawn towards each other they compress the tube D, thus reducing its volume and creating pressure within it. When this pressure has reached suiiicient proportions to overcome the resistance of the spring F" the outlet or discharge valve F5 is unseated and discharge takes place.

Thereafter the movement of the member C5 is reversed and the shaft C correspondingly moves in the opposite direction, thus, through the screws upon it, moving the members B, B1 apart from each other and releasing the pressure upon the pump tube. It is thus caused to expand and the pressure within it is relieved so that the outlet valve-F"5 is seated. The tube when free to do so expands suiliciently to create suction within itself, the inlet valve is thus opened, fluid is drawn in and the pump is again ready to be compressed to cause discharge of iiuid. This cycle of operation is repeated so long as the driving force continues.

I claim:

1. In a pump, a hollow laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume.

2. In a pump, a hollow laminated metallic spring member of oval cross section, arranged for relative movement of the laminations and denning a pump chamber, and means for changing the shape of the hollow member to change its volume.

3. In a pump, a hollow generally tubular laminated metallic spring member, arranged for relative movement of the laminations and dening a pump chamber. and means for changing the shape of the hollow member to change its volume.

4. In a pump, a hollow laminated metallic spring member, arranged for relative movement-of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said hollow member formed of a single part wrapped uponitself.

5. In a pump, a hollow laminated metallic spring member of oval cross section, arranged for relative movement of the laminations and deiining a pump chamber, and means for changing the shape of the hollow member to change its volume, said hollow member formed o1' a single part wrapped upon itself.

6. In a pump, a hollow generally tubular laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of.' the hollow member to change its volume, said hollow member formed of a single part wrapped upon itself.

7. In a pump, a hollow laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a compression device formed of a plurality of relatively movable members.

8. In a pump, a hollow laminated metallic spring member of oval cross section, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a compression device formed of a plurality of relatively movable members.

9. In a pump, a hollow generally tubular laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a compression device formed of a plurality of relatively movable members.

10. In a pump, a hollow laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a compression device formed of a plurality of relatively movable members, said hollow member formed of a single part wrapped upon itself.

11. In a pump, a hollow laminated metallic spring member of oval cross section, arranged for relative movement of the laminations and deiining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a. compression device formed of a plurality of relatively movable members, said hollow member formed of a single part Wrapped upon itself.

12. In a pump, a hollow generally tubular laminated metallic spring member, arranged for relative movement of the laminations and defining a pump chamber, and means for changing the shape of the hollow member to change its vol: ume said means including a compression device formed of a plurality of relatively movable members, said hollow member formed of a single part wrapped upon itself.

13. In a pump, a hollow metallic spring member defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a cornpression device formed of a plurality of relatively llt movable members including eo-acting threaded portions, the hollow member being positioned between said last mentioned movable members.

14. In a pump, a hollow metallic spring member, dening a pump chamber, and means i'or changing the shape of the hollow member to change its volume, said means including a device formed of a plurality of relatively movable members, said members joined at one end by a rocker pin and including co-acting threaded portions.

15.A In a pump, a hollow metallic spring member, dening a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a device formed of a plurality of relatively movable members, said members joined at one end by a rocker pin, and provided at their other ends with means for moving the ends equally toward and from each other.

16. In a pump, a hollow metallic spring member, defining a pump chamber, and means for changing the shape of the hollow member to change its volume, said means including a device formed of a plurality of relatively movable members, said members joined at one end by a rocker pin, and provided at their other ends with means for moving the ends equally toward and from each other, said hollow member positioned between said relatively movable members.

17. In a liquid moving means, a hollow metallic elastic laminated member arranged for relative movement of the laminations and deiining a liquid chamber, and means for acting upon said member to change its volume to cause movement of the liquid within it.

18. In a liquid moving means, a hollow metallic elastic laminated member arranged for relative movement of the laminations and defining a liquid chamber, and means for acting upon said member to change its volume to cause movement of the liquid within it, said laminated member being formed of a single part wrapped upon itself.

19. In a pump, a hollow metallic laminated member arranged for relative movement ot the laminations and defining a pump chamber, inlet and outlet means therefor, and positive mechanical means for changing the shape of the hollow member, by compression upon it, to change its volume.

PHlLlIP LANE SCOTI. 

